Machine for grading eggs by weight



Feb. 23, 1943. W Q WYLAND 2,311,322

-MACHINE FOR GRADING EGGS BY WEIGHT y ffofzzez Feb. 23, 1943. w, C.`WYLAND 2,311,722

MACHINE FOR. GRADING EGGS BY WEIGHT Filed April 14, 1941 2 Sheets-Sheet2 Patented Feb. 23, 1943 rele MACHINE FOR GRADING EGGS BY WEIGHTApplication April 14, 1941, Serial No. 388,465

11 Claims.

Machines for grading eggs by weight to establish the various commercialgrades has become the generally accepted and approved manner of properlysorting and grading eggs as to this country. Machines of this type areexemplified in the U. S. patent to J. W. Wyland for Egg sizing machineby weight, No. 1,728,463, issued September 17, 1929, led September 17,1927, Serial No. 220,177, in which the eggs in rolling over a weighingscale cause the actuation of van electro-magnetic control releasing adumping panel, this panel pivoting transversely of the path travelled bythe eggs and dumping the eggs downwardly substantially in the verticalplane of their line of travel. Another machine is U. S. Patent No.1,954,164, for Egg sizing by weight, issued to J. W. Wyland on April 10,1934, led February 19, 1930, Serial No. 429,724, of the same generaltype of the patent before mentioned vexcept that the release of thedumping panel was by a mechanical connection to the weighing scale.Another and improved machine is set out in U. S. patent to ChesterWilliam Wyland for Egg grading machine by weight, Patent No. 2,112,259,issued March 29, 1938, filed October 24, 1934, Serial No. 749,766. Inthis case the track located beyond each weighing scale had a dumping ortilting rail discharging the eggs laterally of their line of travel andemployed electro-magnetic equipment to actuate a trigger releasing thetilting rail for dumping. My present invention is an improvement on andfurther development of the above mentioned patents and machinesresulting therefrom.

An object of this invention is to develop a machine which will speed upthe grading of eggs and to do this it is necessary to have a quickeraction of thev tilting rail, including its release by a trigger, thereturn and the positive latching of such tilting rail in position toreceive the neXt egg passing over the preceding scale. Another object ofthe invention is to simplify the construction of the release and controlincluding the return of the tilting rail and to include in this only onespring for returning the tilting rail supported by a pivoted arm to itsinitial position in the line of the track. In certain of the patents andin machines now employed two springs are used to control the reactionsas to the initial movement, the return and the stop for the tilting railor dumping panel which construction necessitates the careful tensioningby a so-called balancing of one spring in relation to the other in orderthat each spring will perform its own function without this beingnullined in whole or in part by the other spring. In the Wyland PatentNo. 1,728,463 this combination of springs included a coil spring and aleaf bumper spring.

In this type of machine it is desirable on energizing of theelectro-magnetic device operating the trigger to not only release thetilting rail or dumping panel but to have this move a small part of itsarcuate rotation so that when the electrofmagnetic device iscle-energized after the weighing scale has returned to its initialposition, the egg having passed thereover so that there is no chance ofthe tilting rail or dumping panel becoming latched, when it shouldoperate to discharge an egg of the proper weight for depressing theweighing scale. Therefore in my present invention a further object andfeature is the employment of a detent lever rotatable on the same pintlevas the arm which carries the tilting rail and this detent lever and thearm are interconnected by a coil spring. The arm is held in its initialposition to form a rigid track for transference of eggs which are toolight to operate at the preceding scale and when released by vanelectro-magnetically controlled trigger, there is an initialv movementof the assembly of the detent lever, the arm having a tilting track anda keeper pin connected to such arm. As the tilting rail moves downwardlya short distance, the keeper pin swings upwardly in an arc so that onrelease of the trigger which is spring actuated for a return, it cannotagain latch the assembly.

In these types of machines when the tilting rail or panel has beenslightly moved to prevent relatching, the weight of the egg coming onthe panel or rail causes its further movement to dump or discharge theegg and it is usual to have the arm or dumping panel returned by aspring to its latched position, In this feature a further object andfeature of my invention relates to the construction and action of thedetent lever and the keeper pin attached to the arm of the tilting rail.This arm is retracted by the reaction of the tension spring which hasone end connected to such detent lever, this lever only having limitedmovement so that on the return the arm or the keeper pin or some similarstructure delivers a hammer-like blow to the detent lever swinging thiswith the arm and tilting rail slightly beyond its initial position. Thismovement is suliicient to permit the trigger actuated by a spring toagain engage the keeper pin or equivalent and retain the tilting rail,the arm to which it is connected and the detent lever in its initialposition ready for passage of eggs lighter than those of the scalepreceding the dumping panel or tilting rail. or to receive the next eggto be dumped.

My invention is illustrated in connection with the accompanyingdrawings, in which:

Fig. 1 is a plan view partly broken away of part of one section of themachine illustrating a weighing scale and a dumping track assembly.

Fig. 2 is a vertical transverse section on the line 2-2 of Fig. 1 in thedirection of the a1'- rows through the weighing scale equipment andshowing the mercury type of circuit closers.

Fig. 3 is a vertical transverse section on the line 3-3 of Fig. 1 in thedirection of the arrows with the tilting rail shown in its lockedposition for transference of eggs showing a portion of the tilting rail,the supporting arm therefor and the detent lever, keeper and triggerassembly therewith.

Fig. 4 is a Side elevation taken in the direction of the arrow 4 of Fig.3.

Fig. 5 is a section similar to Fig. 3 showing the tilting rail in itsinitial drop position on release of the trigger and in dotted lines thecompletely depressed position when dumping an egg.

Fig. 6 is an enlarged View of a portion of Figs. 3 and 5 illustratingthe detent lever, the keeper pin on the tilting rail arm and thetrigger.

Fig. '7 is a vertical longitudinal section taken on the line 1-1 of Fig.6 in the direction of the arrows.

In the general set up of the weighing scale and dumping track equipmentthere is a vertical beam II which is a compartively thin plate. Fromthis there is a horizontal plate I2, the whole being preferably analuminum casting. The plate at the infeeding end I3 has a raisedstationary track I4 formed of two rails l5, also part of the casting.There is an open or cut-out section I5' to accommodate the weighingscale assembly. The plate I2 has a transverse edge I6 beyond theweighing scale, a fixed track I1 ls formed on the horizontal plate orplatform I2 towards the discharge end of the machine of which one railI8 is fixed and extends to the edge I6. There is a curved graduallyrising diverting rail I9 which is an arcuate depending skirt to guideeggs in their dropping action. This skirt has a slot ZI, the slotrunning partly into the trailing portion of the horizontal plate I2. Thediverting rail I9 connects with the second xed rail 22.

The dumping assembly employs a longitudinal rail 26 which alignssubstantially with the xed rail 22 but is positioned slightly outside ofthe same. The slot 2| is to accommodate the arcuate up and down motionof this rail 26. The rail is formed of wire and has a drop portion 21connecting to an arm extension 28. This forms part of the tilting railarm assembly 3U. The wire 28 connects to an aluminum or die cast metalcasting arm 3l which is pivoted for rotation on a main pintle 32, thearm having an extension 33 beyond the pintle. The pntle is supported bythe bracket casting 35 having journal arms 36 and 31. A keeper pin 38preferably made of a hard metal is secured in the extension 33 of thetilting rail arm assembly 3U. This pin is shown as square in crosssection having in its normal position a ilat under-surface to strike thedetent lever as hereunder described.

The detent lever assembly 40 is formed of a flat plate 4I with an edge42 which is normally horizontal when the tilting rail is in position fortransference of eggs. There is an upwardly ex tended finger 43 on thislever. There are two substantially vertical edges 44 on the finger and45 on the inner edge of the plate 4I. From the lower edge 46 there is atab 41. A hub 48 is preferably formed integral with the plate or made ofa suitable bearing metal with the plate attached thereto and this hub isjournalled on the main pintle 32. I'he hub of the arm 3l) and the hub 48of the detent lever are confined between the journals 36 and 31. Atension spring 49 is secured to the tab 41 and to any one of a series ofperforations 58 on the extension 32 of the tilting rail arm 30. The web5I of the bracket 35 forms a stop for the motion of the Y detent leverin its oscillating movement.

Y The assembly of the tilting rail with its arm and the detent lever isretained in an egg transmitting position by a pivotally mounted triggerassembly 60. This employs a trigger plate 6I which is the armature of anelectro-magnetic device 62, this being mounted on the bracket 35. Aplate 63 at the top of the magnet forms the pivoting support at 64 forthe trigger plate. This plate has its upper end retracted by the spring65 secured to the upper end of the trigger plate above the pivot, thespring being attached to a clip 66 forming part of the electro-magnetassembly. Stop fingers 61 are mounted on a plate 68 adjustably securedto the lower part of the lower part of the electro-magnet frame. 'I'heselimit the outward movement of the armature trigger under the influenceof the spring 65 after it has been retracted by the metallic core 69 ofthe electro-magnet assembly.

As the features of my invention relating to the trip caused by the eggpassing over a weighing scale or the like is not dependent on theparticular type of scale shown for instance in Figs. 1 and 2, theelectro-magnet may be described as controlled by any suitablearrangement so that this is momentarily energized before the egg passingalong the track reaches the tilting rail assembly. The eggs may be fedvery much in the same manner as in the prior patents designated in whichthe eggs roll by gravity over the track I4 prior to reaching theweighing scale, running ahead of the slats of an overhead draper whichfeed the eggs to the machine and from one dumping and grading dischargeto the next in an assembly of weighing sca-les and dumping tracks. Inthe prior construction the egg also rolls by gravity over the rails onthe weighing scale but in this case instead of running on a bridgingtrack, are discharged directly onto the dumping rail assembly which asabove mentioned, has the xed rail I8.

On the presumption of the above construction, the manner of operationand functioning of my invention is substantially as follows: presumingthe trigger which in this case is an armature of an electro-magnet is inthe locking position. it engages the keeper pin 38 on its upper surfacewhich extends laterally from the tilting arm assembly 30 and thus holdsthe tilting rail 26 in the position for carrying and transferring eggswhich do not operate the particular scale preceding this dischargepoint. This keeper pin also engages the upper edge 42 of the detentlever and due to the tension of the spring 49 between the tip 41 on theplate 4I and the lever arm 3D, these are held together as a unit. Theedges 44 and 45 of the plate 4I and the finger 43 have a clearance fromthe plate II and the web -50 of the bracket 35 as shown in Fig. 3. Assoon as the trigger is released by energizing the magnet it swings toone sideto the most remote left hand dotted position as shown in Fig. 1thus giving suilcient room for release of the end of the keeper pin. Dueto the tilting arm overbalancing the detent lever assembly, the armdrops from the full line position of Fig. 3 to the full line position ofFig. 5 and the detent lever acting under the influence of the tensionspring 40 tilts until the upper end of the finger 43 engages the back ofthe plate I I. This action may occur while the egg is transferring fromthe scale rails to the tilting rail assembly or the action may occur asthe weight'oi the egg is brought on the tilting rail, this beingimmaterial so long as the drop action of the arm is sufficiently rapidso that the keeper pin 38 lifts to the rst dotted position of Fig. 6 orthe full line position of Fig. 5 so that the trigger on its returncannot again latch this keeper pin. The weight of the egg acting on thetilting rail then moves this from the full line position of Fig. 5 tothe dotted line position of Fig. 5. This action tensions the spring 49and raises the keeper pin |38 to the dotted line position of Fig. 5 orthe upper dotted position of Fig. 6. During this movement the end of thekeeper pin slides `on the fiat surface of the plate 6I of the triggerand causes this to have a slight motion as indicated by the close-indotted lines of Fig. '7.

An important characteristic of my invention is that as soon as the eggis released, the extended spring 49 acting with the detent lever in thefull line position of Fig. 5 exerts a downward pull on the extension end33 of the arm 30. This action brings the keeper pin 33 into contact withthe edge 42 of the detent plate 4I giving this a hammer-like blow andswinging such plate to have its lower portion with the edge 45 swinginto contact with the web 55, this limiting the motion. This actioncarries the keeper pin 38 slightly below the lower edge of the triggerplate 6I allowing such plate to swing by the action of its tensionspring 65 to its active position engaging the stop tabs 51, then both onthe rebound action of the plate 4I from the web 50 and theover-balancing action of the arm 3S, the keeper 3S is again engaged andlocked with the detent plate and the arm 30 in its operating position.This action is very quick. It is only necessary to have one spring 49causing the return of the tilting arm. Where itis desired to change thetension reaction of the spring it may be caught into one or other of theeyes or perforations 50 on the lever arm.

The particular type of weighing scale and the electrical control for thedumping of eggs shown in this case is quite similar to that of my PatentNo. 2,112,259 of March 29, 1938, above mentioned, however to give asufficient operating construction properly described in this secication, the present arrangement is constructed substantially asfollows, having reference particularly to Figs. 1 and 2. The weighingscale assembly designated for the main part operates in the opening i5'of the horizontal plate I2. The fulcrum 15 is pivoted on Support 11mounted on the plate I2 and on opposite sides of the opening. The scalebeam 18 has an extended screw threaded end portion 'I9 with acounterweight 8B threaded thereon. The main portion 8|. of the beamextends transversely across the opening I5' below the level of thehorizontal plate I2 and has a pin end 82 with a downwardly extended pinpoint 83. The scale platform 85 is pivoted on transverse balance edgesYoutside of the egg shell.

.receive the eggs and the .raised stationary track I4. The tracks'areformed of wires connected rigidly at the supporting portion of theplatform. These wires are so mounted that they form a smooth edge andthere is a central depression 0| to give clearance to the convex curveo-n the Depending from the Vplatform there is `a pendulum in which theweight 95 depends from the platform by wire supports 91. This is toallow a slight swing to the platform and provide somewhat the sameaction 'as in my patent above mentioned.

The electricalequipment provides a mercury switch |00. mounted in abracket |02 which may be formed integral with the plate I2, there beinga depression |03 to accommodate the movement of the scale beam. Acontact pin |04 attached to the portion 19 of the beam dips into themercury in this cup. A second mercury switch |05 is on the 4oppositeside of the machine. This employs a mercury cup |06 mounted in a bracket|01 which is connected to the vertical beam I through an insulatingplate |08. The pin 83 is designed to dip into the mercury cup |06. Theelectrical circuits shown in diagram in connection with Fig. 1illustrate a transformer III) having a primary III which may beconventional volts and a secondary I I2 of reduced voltage of which I ndabout 16 volts satisfactory. A lead IIS from one end of the secondaryleads to a connector I|4 at the dip mercury switch I 55.- The circuitthen passes through the scale beam when the contact is made to themercury contact |00 in which the pin |04 is 'always immersed in themercury. Thence `from the connector I I5 by a lead line I Iu to aconnector II 1 to the electro-magnetic assembly 62. From a secondterminal IIB there is a lead IIS connecting to the other end of thesecondary of the transformer. A condenser |20 is bridged by circuitlines I2I between the mercury switch |05 from the connector I I4 to aconnector I22 on the metal frame of the machine and thus forming abridge across the make and break points of the connector pin 83 and themercury in the mercury switch |05 thus reducing sparking.

It will thus be seen from my invention that the eggs are transferreddirectly from the rails of the weighing scale to the dumping trackwithout necessitating the intermediate construction of a transferportion or rail. If the egg is not of sufficient weight to depress thescale, of course the electro-magnet is not energized and eggs aretransferred to the dumping rail and then onto a further scale if desiredfor operating on lighter weight eggs. Should however an egg in rollingover the rails of the scale be suicient to depress the scale beam, acontact is formed at the nger 83 and the mercury in the mercury switchcup |05. This closes the circuit to the electro-magnet, the first actionof which is to retract the trigger plate 5| which is the armature of theelectromagnet This may be swung to the extreme position shown in dottedlines in Fig. 7. The retraction spring 65 then tends to returnathetrigger to its rst or initial position however by this time the assemblyof the tilting rail having the arm 30 and the detent assembly 40 haveshifted from the position shown in full lines in Fig. 3 to that of thefull line position of Fig. 5 due to the rail This employs a mercury cup|0| overbalancing the assembly. The tilting rail is thus partlydepressed and in a position to immediately recede further downwardlywhen the weight of the eggs comes on the rail portion 26. This moves thearm assembly 3Q to the dotted line position of Fig. 5, the egg thenbeing discharged and guided to a receiving bin. rEhen as soon as theweight of the egg allows the free reaction of the tilting rail 26, thespring 4Q lifts the arm and forcibly brings the keeper pin into contactwith the upper edge 42 of the detent lever plate 4I. This reactionswings the whole assembly until the lever plate 4! strikes the web 55)shown dotted in Fig. 6. This allows sufficient clearance for the trigger69 to return to its original position and on the slight reverse swing ofthe arm 35 and the detent lever 40 to their first positions, due to theunbalance of the arm 39, the dumping rail assembly is again latched.This construction it will be seen develops a quick action in dumping theeggs and returning the dumping rail to its original position with aquick reaction of the unlatching and again latching the arm and havingthe assurance that when the trigger 60 unlatches the dumping assemblyfor moving, that it cannot again accidently within a time period orreaction again exert its latching function until the dumping rail andthe assembled parts have returned to the original first position.

Various changes may be made in the details of the construction withoutdeparting from the spirit or scope of the invention as defined by theappended claims.

I claim:

l. In a device as described having means to discharge articles bydumping the same, the combination of a rst and a second oscillatabledevice, a latching trigger to retain both devices in a first position, aspring interconnecting the two devices, means to limit the movement ofthe second device when bcth are released from the trigger at a secondposition, the rst device moving from a rst to a second position on suchrelease, the rst device being adapted to move from a second to a thirdposition due to the action of dumping an article and thereby tension thespring, the spring being adapted to return the first device from itsthird to its first position and means engaging the first and the seconddevices to return the second device from its second to its rst positionand means to actuate the trigger for both devices to be restrained bythe latch.

2. In a device as described having means for discharging articles bypressure of an article on a discharge device, the combination of apivoted arm connected to the discharge device and a lever with theirpintles in alignment, the arm being movable from a rst to a secondposition and in dumping an article from a second to a third position thelever having a movement from a first to a second limiting position, aspring engaging the lever and arm, a latch with means engaging the armand lever to retain both in a first position, means to release thelatch, the arm and the lever being movable by a gravity action fromtheir first to their second positions, the arm being adapted to movefrom the second to its third position in dumping an 1irticle and therebytension the spring, the said spring being adapted on release of thearticle to return the arm from its third to its first position and meansto react between the arm and the lever to return the lever from itssecond to its first position and means to actuate the latch to againlatch the arm and the lever in such rst position.

3. In a device as described having means for passing articles over adumping track having at least one movable rail, the combination of apivoted arm operatively connected to the dumping rail, a pivoted detentlever, a spring connecting the arm and the lever, a trigger, meansinterconnecting the trigger with both the arm and the lever to hold thetrack in a rst position for transference of articles, means to releasethe trigger, a stop means for the lever, the arm and the lever rotatingas a unit due to an overbalance, the arm then moving to a secondposition, the weight of an article on the dump rail then being adaptedto move the arm to a third or extreme position and at the saine timetension the spring, such spring after dumping the article urging the armto its original position and means interacting between the arm and thelever to return the lever to its original position and means to shiftthe, trigger to again latch the arm and the lever.

4. In a device as described in which articles passing over a rail or thelike are discharged by the weight of the articles depressing the rail,the combination of a pivoted arm having a connection to the rail, adetent lever mounted on a pintle aligned with that of the arm, a keeperpin on the arm to engage the lever, a spring interengaging the lever andthe arm, a trigger to engage the keeper pin, means to actuate thetrigger to release the keeper pin, the said arm and lever beingoverbalanced to move from a first to a second position, a stop to engagethe lever at said second position, the weight of the article then beingadapted to move the arm to a third position and tension the spring, thespring after dumping the article rotating the arm and causing the keeperpin to strike the lever and move the lever and keeper pin past theinitial position and means to reengage the trigger with the keeper pinon the return of the arm, the lever and the keeper pin to the originalposition by the action of gravity balance.

5. In a machine for grading eggs by weight having an egg dumping devicereleased by the operation of a weighing scale actuated by the egg, thecombination of the dumping device having a pivoted arm, a pivoted detentlever, a retraction spring connected between the lever and the arm toreturn the arm to its initial position after dumping an egg, an impactmeans between the arm and the detent lever to swing such lever on itspivot and a release trigger to engage the arm and retain the arm in itsinitial position.

6. A machine for grading eggs by weight having a track on which eggsroll, a weighing scale forming part of the track, a dumping track havinga fixed rail and a dumping rail combined with a pivoted arm connected toand forming a connecting support for the dumping rail, a pivoted detentlever, a retraction spring between the detent lever and the arm, anelectrically operated latch trigger to engage the arm and retain thedump track in its normal position for passing eggs along the track, thesaid dump rail when the said arm is released by the trigger beingadapted to swing on its pivot due to the weight of an egg, the saidspring being adapted to swing the detent lever from a first to a secondposition and the return action of the arms under the action of thespring causing a striking blow of part of the arm on the said leverreturning both the lever and the arm to the position to be latched bythe trigger and a spring means to shift the trigger into its latchedposition.

7. In a device as described having means for discharging articles lbypressure of an article on a discharge device, the combination of alpivoted arm connected to the discharged device, a pivoted detent lever,a retraction spring between the lever and the arm, a keeper pinconnected to the arm and engaging the lever, a trigger engaging thekeeper pin and normally retaining the pin, the arm and the lever in afirst position, means to unlatch the trigger, means urging the triggerfrom its unlatched to its latching position, means to shift the arm, thelever and the trigger pin in a first movement when unlatched by thetrigger, the keeper pin having means to engage the trigger and retainthe trigger in its unlatched position, a stop means for the lever, thearm and trigger pin being adapted for a further movement on dischargingan article, the spring being adapted to return the arm and trigger pinto its original position and the trigger pin return the lever to itsoriginal position and disengage the trigger to again latch the keeperpin.

8. In a device as described having means for discharging articles bypressure of an article on a discharge device, the combination of an armmounted on a pivot between its ends, one end having a connection to thedischarge device, the other end having a keeper pin, a detent leverpivoted axially to the pivot of the ar-m, a retraction spring betweenthe lever and the arm, a keeper pin on the arm to engage the lever, atrigger having a movement parallel to the axis of the pivot and normallyengaging the keeper lpin and retaining such pin, the arm and the detentin a first and latched position, means to move the trigger to a secondand unlatched lposition, the arm and lever being balanced to move to asecond position, means urging the trigger to a latching position, thekeeper pin engaging the trigger and restraining the same from latching,the arm being adapted to move by the action of an article to a thirdposition, means restraining the lever at its second position therebytensioning the spring, the spring being adapted to return the arm to itsfirst position and in so doing the keeper pin engaging the detent leverand moving such lever to its first position and in the same actionreleasing the trigger for return of the trigger to its latchingposition.

9. In a device as described having means for discharging articles bypressure of an article on a discharge device, the combination of an armhaving a connection to the discharge device and mounted on a pivot, akeeper pin connected to the arm, a detent lever having a pivotalmounting to oscillate in a plane parallel to that of the arm having aned-ge engaged by the keeper pin, a retraction spring between the arm andthe detent lever, the keeper pin being adapted to engage the arm when inits initial latched position, a trigger engaging the keeper pin in alatched position, means to unlatch the trigger and means to urge thetrigger to Ia latched position, the arm and detent lever being balancedwhen unlatched to shift to a second position and means restraining thedetent lever in such second position, the arm being adapted for furthermovement due to the .pressure of an article on a discharge device tomove the arm toa third position and thereby tension the spring, thespring being adapted to return the arm to its iirst position and thetrigger pin engaging the detent lever and shifting such lever to its rstposition, the keeper pin restraining the trigger in its unlatchedposition in the movement of the arm from its rst to its second and thirdposition and again releasing the trigger on returning to the firstposition of the arm.

10. In a device as described having means for discharging articles bypressure of an article on a discharge device, the combination of ashiftable arm having one portion connected to the discharge device forpassage of articles when the arm is held in a first position, a movabledetent lever, an energy storing device connecting the arm and the lever,a latch restraining the arm and lever in a first position, means toshift the latch to an unlatching position, means to move the arm andlever to a second position with a stop means engaging the lever, the armthen being free to move due to the pressure of an article on thedischarge device to a third position and thereby energize the energystoring device, such device on discharge of the article being adapted toreturn the arm to its second position, a striker means on the armengaging the detent lever with a blow-like action, the momentum of thearm carrying the arm and the detent lever at least to the rst positionand means to move the latch to a latching position to again restrain thearm and lever in the rst position.

11. In a device as described having means for discharging articles bypressure of an article on a discharge device, the combination of apivoted armv connected to the discharge device, a movable detent lever,an energy storing means interconnecting the arm and the lever, a triggerretaining the arm and the lever in a first position for passage ofarticles, means to release the trigger, means to move the arm and leverto a second position when released from the trigger with a stop meansfor the lever. the arm being adapted to move to a third .position due tothe pressure of an article on the discharge device thereby storing upenergy in the energy storing means, such means returning the arm to itssecond position, a striker device on the arm to forcibly engage thelever and move the lever and arm by momentum at least to the firstposition and means to shi-ft the trigger to a. latching position toagain latch the arm and lever in the rst .position.

WILLIAM CHESTER WYLAND.

